Charge forming device



AUB# 3Q, '1932 c. E. WILLIAMS 1,3745491 CHARGE Fionume DEVICE med Jan.2o,- 1923 y 2 sheets-sheet 2 '/0 653- l ya d? 6 d) w Jl VJ q v 7 .3132

Patented Aug. 30, 1932 UNITED STATES CHARLES n. WILLIAMS, or DETROIT,MICHIGANQASSIGNOR Tol GENERAL morons yconroRATIoN, or DETROIT, MICHIGAN,AconroaATIoN or DELAWARE Y CHARGE FonMING-Dnvrcni I Application filedJanuary 20,1923. SiersilfNo. `613,956.4 ,i

.5 area of the surfaces engaged by the charge after itis formed, byforming the charge directly in a chamber having outlets at opposite endsarranged, when used with aY V, to supply charges alternately type motor,i (or simultaneously) directly to the passages in the opposed cylinderblocks. This re-` duces variation in the charge, due to the walls takingup and giving off particlesof fuel.

In the illustrated embodiment ofthe invention, a float chamber andarfuel nozzle and a primary air inlet are arranged centrally of thebottom of the chamber, and an auxiliary air inlet is arranged in anextension centrally of the side of the chamber.

According to another feature of the invention, and having in view thesame purpose of reducing variations in the charge, a throttle valve isarranged in each of the above described outlets, operating mechanismconnecting the valves being arranged to open and close themsimultaneously under the control of the driver. By this arrangement inthe illustrated type of engine the charge is not subject to the fullsuction from the engine until it enters the passages in the cylinderblocks.

Other features of the invention, including an improved arrangement ofthe device with a bypass connecting the outlets around the throttlevalves to correct for any differences in the settings of the valves, andother novel combinations and particular constructions, will be apparentfrom the following description of the illustrative embodiment of theinvention shown in the accompanying drawings, in which:

Fig. 1 is a view, partly in front elevation Y and partly in section,showing an improved charge forming device mounted between the opposedcylinder blocks of a V-type engine; Fig. 2 is a view, partly in frontelevation and partly in section, ofthe device;

Fig. 3 shows the device partly in top plan 'l view and partly brokenaway;

'58 (Fig- 3). The compression of sprmg 54 sectional Viewv on the line4-4 `gofl Fig. 3v and, Y

' Fig. is'an end elevation ofthefdevice;` vIn the illustrated form thedevice comprises an elongated mixing chamber 10,4 having out- Vlets1V`2fand-14 4dat opposite endsarranged in 'flanges 16 and 18 bolted tolintake passages' 2 0 vand 22 of bpposed cylinder blocks 24and26securedto crankcase28. A filoat chamber 30, receiving 'fuel' fromV apassage 32, together with a fuel inlet nozzle 34 and a primary air inletpassage or nozzle 36, are arran ed centrallyof the bottomuof the mixingctiriamber, the Anozzles being arranged just below a f strangle tube.38.The chamber is jacketed, so that a space 4() for water or other heatingfluid is provided, this space opening through flanges 16 and 18 as shownat 42 in Fig. 5, to communicate with passages inw the cylinder blocks.To facilitate assembling "n I strangle tube 38 in placa-cover plates 44andv 46 are provided.

As, above explained an extension 48 is arranged centrally of the side ofthe device to l provide a seat for an auxiliary air inlet valve 50,shown as having a counterweight 52 and as being held yieldmgly in placeby a spring 54. This valve is pivotally mounted at 56, and iscontrolled, when starting, by a. 1ever may be adjusted by a screw 60.

The throttle valves are shown as butterfly valves indicated at 62 and64, mounted in outlets 12 and 14 respectively and are swungsimultaneously in opposite directions by levers 66 and 68 connectedbylinks 70 and 72 to levers 74 and 76 mounted on a rockshaft 78 operatedby a vertical arm 80. In order to, guard against variations due to thepossibility that the valves may not be set exactly alike, a bypass 82connects outlets 12 and 14 outside of the valves.

It will be apparent Vthat the charge passing directly from the mixingchamber to the passages in the cylinder blocks, has a minimumV variationdue to deposition on and evapora- Y tion from the walls it passes, andthat placing the throttle valvesl directly in the opposite outletsmaintains a comparatively constant. condition in the mixing chamber.

These considerations are of especial importance in eliminating anytendency of the engine to backfire or to choke, due to variations in themixture caused by deposition on cf r fvaporation from the Walls ofparticles of While one embodiment of the invention has been illustratedand described, `it is not my intention to limit its scope thereby, orotherwie than by. the termsof the appended claim.

claim:

A carburetor having an approximatelyl horizontal passage constituting amixing chamber and adapted-to deliver fuel mixture from its ends torespective cylinder blocks of an internal combustion engine, a fuelreservoir positioned to deliver fuel to said mixing chamber, means forsupplying fuel from said 4I esefrvc'iir 'and air to said chamberapproxif mately midway thereof,v a single/ fuel jet supy ply meansdischarging into said chamber and Y suppl ing'fuel to both Ysaid blocks;two throttleva ves positioned' one-at each end' of saijd chambefmeansfor actuatlngfs'aid valvesslmulltaneously and an equalizing passageconnecting the ends of said chamber outside the throttle valves.

In testimony whereof I aiiix my signature.

CHARLES E. WILLIAMS.

